// options.h -- handle command line options for gold -*- C++ -*-
-// Copyright 2006, 2007, 2008, 2009 Free Software Foundation, Inc.
+// Copyright 2006, 2007, 2008, 2009, 2010, 2011 Free Software Foundation, Inc.
// This file is part of gold.
#include <cstdlib>
#include <cstring>
#include <list>
+#include <map>
#include <string>
#include <vector>
class General_options;
class Search_directory;
class Input_file_group;
+class Input_file_lib;
class Position_dependent_options;
class Target;
class Plugin_manager;
+class Script_info;
// Incremental build action for a specific file, as selected by the user.
enum Incremental_disposition
{
+ // Startup files that appear before the first disposition option.
+ // These will default to INCREMENTAL_CHECK unless the
+ // --incremental-startup-unchanged option is given.
+ // (For files added implicitly by gcc before any user options.)
+ INCREMENTAL_STARTUP,
// Determine the status from the timestamp (default).
INCREMENTAL_CHECK,
// Assume the file changed from the previous build.
extern void
parse_bool(const char* option_name, const char* arg, bool* retval);
+extern void
+parse_int(const char* option_name, const char* arg, int* retval);
+
extern void
parse_uint(const char* option_name, const char* arg, int* retval);
extern void
parse_double(const char* option_name, const char* arg, double* retval);
+extern void
+parse_percent(const char* option_name, const char* arg, double* retval);
+
extern void
parse_string(const char* option_name, const char* arg, const char** retval);
// var() and set_var() as General_options methods. Arguments as are
// for the constructor for One_option. param_type__ is the same as
// type__ for built-in types, and "const type__ &" otherwise.
+//
+// When we define the linker command option "assert", the macro argument
+// varname__ of DEFINE_var below will be replaced by "assert". On Mac OSX
+// assert.h is included implicitly by one of the library headers we use. To
+// avoid unintended macro substitution of "assert()", we need to enclose
+// varname__ with parenthese.
#define DEFINE_var(varname__, dashes__, shortname__, default_value__, \
default_value_as_string__, helpstring__, helparg__, \
optional_arg__, type__, param_type__, parse_fn__) \
public: \
param_type__ \
- varname__() const \
+ (varname__)() const \
{ return this->varname__##_.value; } \
\
bool \
void \
parse_to_value(const char*, const char*, \
Command_line*, General_options* options) \
- { options->set_##varname__(false); } \
+ { \
+ options->set_##varname__(false); \
+ options->set_user_set_##varname__(); \
+ } \
\
options::One_option option; \
}; \
}; \
Struct_disable_##varname__ disable_##varname__##_initializer_
+#define DEFINE_int(varname__, dashes__, shortname__, default_value__, \
+ helpstring__, helparg__) \
+ DEFINE_var(varname__, dashes__, shortname__, default_value__, \
+ #default_value__, helpstring__, helparg__, false, \
+ int, int, options::parse_int)
+
#define DEFINE_uint(varname__, dashes__, shortname__, default_value__, \
helpstring__, helparg__) \
DEFINE_var(varname__, dashes__, shortname__, default_value__, \
#default_value__, helpstring__, helparg__, false, \
double, double, options::parse_double)
+#define DEFINE_percent(varname__, dashes__, shortname__, default_value__, \
+ helpstring__, helparg__) \
+ DEFINE_var(varname__, dashes__, shortname__, default_value__ / 100.0, \
+ #default_value__, helpstring__, helparg__, false, \
+ double, double, options::parse_percent)
+
#define DEFINE_string(varname__, dashes__, shortname__, default_value__, \
helpstring__, helparg__) \
DEFINE_var(varname__, dashes__, shortname__, default_value__, \
{ }
// This is the usual constructor.
- Search_directory(const char* name, bool put_in_sysroot)
+ Search_directory(const std::string& name, bool put_in_sysroot)
: name_(name), put_in_sysroot_(put_in_sysroot), is_in_sysroot_(false)
{
if (this->name_.empty())
// alphabetical order). For both, lowercase sorts before uppercase.
// The -z options come last.
+ DEFINE_bool(add_needed, options::TWO_DASHES, '\0', false,
+ N_("Not supported"),
+ N_("Do not copy DT_NEEDED tags from shared libraries"));
+
+ DEFINE_bool_alias(allow_multiple_definition, muldefs, options::TWO_DASHES,
+ '\0', N_("Allow multiple definitions of symbols"),
+ N_("Do not allow multiple definitions"), false);
+
DEFINE_bool(allow_shlib_undefined, options::TWO_DASHES, '\0', false,
N_("Allow unresolved references in shared libraries"),
N_("Do not allow unresolved references in shared libraries"));
DEFINE_bool(as_needed, options::TWO_DASHES, '\0', false,
- N_("Only set DT_NEEDED for dynamic libs if used"),
- N_("Always DT_NEEDED for dynamic libs"));
+ N_("Only set DT_NEEDED for shared libraries if used"),
+ N_("Always DT_NEEDED for shared libraries"));
+
+ DEFINE_enum(assert, options::ONE_DASH, '\0', NULL,
+ N_("Ignored"), N_("[ignored]"),
+ {"definitions", "nodefinitions", "nosymbolic", "pure-text"});
// This should really be an "enum", but it's too easy for folks to
// forget to update the list as they add new targets. So we just
DEFINE_bool_alias(Bstatic, Bdynamic, options::ONE_DASH, '\0',
N_("-l does not search for shared libraries"), NULL,
true);
+ DEFINE_bool_alias(dy, Bdynamic, options::ONE_DASH, '\0',
+ N_("alias for -Bdynamic"), NULL, false);
+ DEFINE_bool_alias(dn, Bdynamic, options::ONE_DASH, '\0',
+ N_("alias for -Bstatic"), NULL, true);
+
+ DEFINE_bool(Bgroup, options::ONE_DASH, '\0', false,
+ N_("Use group name lookup rules for shared library"), NULL);
DEFINE_bool(Bsymbolic, options::ONE_DASH, '\0', false,
N_("Bind defined symbols locally"), NULL);
{"none"});
#endif
+ DEFINE_bool(copy_dt_needed_entries, options::TWO_DASHES, '\0', false,
+ N_("Not supported"),
+ N_("Do not copy DT_NEEDED tags from shared libraries"));
+
+ DEFINE_bool(cref, options::TWO_DASHES, '\0', false,
+ N_("Output cross reference table"),
+ N_("Do not output cross reference table"));
+
+ DEFINE_bool(ctors_in_init_array, options::TWO_DASHES, '\0', true,
+ N_("Use DT_INIT_ARRAY for all constructors (default)"),
+ N_("Handle constructors as directed by compiler"));
+
DEFINE_bool(define_common, options::TWO_DASHES, 'd', false,
N_("Define common symbols"),
N_("Do not define common symbols"));
NULL);
DEFINE_bool(detect_odr_violations, options::TWO_DASHES, '\0', false,
- N_("Try to detect violations of the One Definition Rule"),
- NULL);
+ N_("Look for violations of the C++ One Definition Rule"),
+ N_("Do not look for violations of the C++ One Definition Rule"));
+
+ DEFINE_bool(discard_all, options::TWO_DASHES, 'x', false,
+ N_("Delete all local symbols"), NULL);
+ DEFINE_bool(discard_locals, options::TWO_DASHES, 'X', false,
+ N_("Delete all temporary local symbols"), NULL);
DEFINE_bool(dynamic_list_data, options::TWO_DASHES, '\0', false,
N_("Add data symbols to dynamic symbols"), NULL);
N_("Export all dynamic symbols"),
N_("Do not export all dynamic symbols (default)"));
+ DEFINE_special(EB, options::ONE_DASH, '\0',
+ N_("Link big-endian objects."), NULL);
+
+ DEFINE_special(EL, options::ONE_DASH, '\0',
+ N_("Link little-endian objects."), NULL);
+
DEFINE_bool(eh_frame_hdr, options::TWO_DASHES, '\0', false,
N_("Create exception frame header"), NULL);
+ DEFINE_bool(enum_size_warning, options::TWO_DASHES, '\0', true, NULL,
+ N_("(ARM only) Do not warn about objects with incompatible "
+ "enum sizes"));
+
+ DEFINE_set(auxiliary, options::TWO_DASHES, 'f',
+ N_("Auxiliary filter for shared object symbol table"),
+ N_("SHLIB"));
+
+ DEFINE_string(filter, options::TWO_DASHES, 'F', NULL,
+ N_("Filter for shared object symbol table"),
+ N_("SHLIB"));
+
DEFINE_bool(fatal_warnings, options::TWO_DASHES, '\0', false,
N_("Treat warnings as errors"),
N_("Do not treat warnings as errors"));
+ DEFINE_string(fini, options::ONE_DASH, '\0', "_fini",
+ N_("Call SYMBOL at unload-time"), N_("SYMBOL"));
+
+ DEFINE_bool(fix_cortex_a8, options::TWO_DASHES, '\0', false,
+ N_("(ARM only) Fix binaries for Cortex-A8 erratum."),
+ N_("(ARM only) Do not fix binaries for Cortex-A8 erratum."));
+
+ DEFINE_bool(fix_arm1176, options::TWO_DASHES, '\0', true,
+ N_("(ARM only) Fix binaries for ARM1176 erratum."),
+ N_("(ARM only) Do not fix binaries for ARM1176 erratum."));
+
+ DEFINE_bool(merge_exidx_entries, options::TWO_DASHES, '\0', true,
+ N_("(ARM only) Merge exidx entries in debuginfo."),
+ N_("(ARM only) Do not merge exidx entries in debuginfo."));
+
+ DEFINE_special(fix_v4bx, options::TWO_DASHES, '\0',
+ N_("(ARM only) Rewrite BX rn as MOV pc, rn for ARMv4"),
+ NULL);
+
+ DEFINE_special(fix_v4bx_interworking, options::TWO_DASHES, '\0',
+ N_("(ARM only) Rewrite BX rn branch to ARMv4 interworking "
+ "veneer"),
+ NULL);
+
+ DEFINE_bool(g, options::EXACTLY_ONE_DASH, '\0', false,
+ N_("Ignored"), NULL);
+
+ DEFINE_bool(gnu_unique, options::TWO_DASHES, '\0', true,
+ N_("Enable STB_GNU_UNIQUE symbol binding (default)"),
+ N_("Disable STB_GNU_UNIQUE symbol binding"));
+
DEFINE_string(soname, options::ONE_DASH, 'h', NULL,
N_("Set shared library name"), N_("FILENAME"));
DEFINE_string(dynamic_linker, options::TWO_DASHES, 'I', NULL,
N_("Set dynamic linker path"), N_("PROGRAM"));
- DEFINE_bool(incremental, options::TWO_DASHES, '\0', false,
- N_("Work in progress; do not use"),
- N_("Do a full build"));
+ DEFINE_special(incremental, options::TWO_DASHES, '\0',
+ N_("Do an incremental link if possible; "
+ "otherwise, do a full link and prepare output "
+ "for incremental linking"), NULL);
+
+ DEFINE_special(no_incremental, options::TWO_DASHES, '\0',
+ N_("Do a full link (default)"), NULL);
+
+ DEFINE_special(incremental_full, options::TWO_DASHES, '\0',
+ N_("Do a full link and "
+ "prepare output for incremental linking"), NULL);
+
+ DEFINE_special(incremental_update, options::TWO_DASHES, '\0',
+ N_("Do an incremental link; exit if not possible"), NULL);
+
+ DEFINE_string(incremental_base, options::TWO_DASHES, '\0', NULL,
+ N_("Set base file for incremental linking"
+ " (default is output file)"),
+ N_("FILE"));
DEFINE_special(incremental_changed, options::TWO_DASHES, '\0',
N_("Assume files changed"), NULL);
DEFINE_special(incremental_unknown, options::TWO_DASHES, '\0',
N_("Use timestamps to check files (default)"), NULL);
+ DEFINE_special(incremental_startup_unchanged, options::TWO_DASHES, '\0',
+ N_("Assume startup files unchanged "
+ "(files preceding this option)"), NULL);
+
+ DEFINE_percent(incremental_patch, options::TWO_DASHES, '\0', 10,
+ N_("Amount of extra space to allocate for patches"),
+ N_("PERCENT"));
+
+ DEFINE_string(init, options::ONE_DASH, '\0', "_init",
+ N_("Call SYMBOL at load-time"), N_("SYMBOL"));
+
DEFINE_special(just_symbols, options::TWO_DASHES, '\0',
N_("Read only symbol values from FILE"), N_("FILE"));
+ DEFINE_bool(map_whole_files, options::TWO_DASHES, '\0',
+ sizeof(void*) >= 8,
+ N_("Map whole files to memory (default on 64-bit hosts)"),
+ N_("Map relevant file parts to memory (default on 32-bit "
+ "hosts)"));
+ DEFINE_bool(keep_files_mapped, options::TWO_DASHES, '\0', true,
+ N_("Keep files mapped across passes (default)"),
+ N_("Release mapped files after each pass"));
+
+ DEFINE_bool(ld_generated_unwind_info, options::TWO_DASHES, '\0', true,
+ N_("Generate unwind information for PLT (default)"),
+ N_("Do not generate unwind information for PLT"));
+
DEFINE_special(library, options::TWO_DASHES, 'l',
N_("Search for library LIBNAME"), N_("LIBNAME"));
DEFINE_dirlist(library_path, options::TWO_DASHES, 'L',
N_("Add directory to search path"), N_("DIR"));
+ DEFINE_bool(nostdlib, options::ONE_DASH, '\0', false,
+ N_(" Only search directories specified on the command line."),
+ NULL);
+
+ DEFINE_bool(rosegment, options::TWO_DASHES, '\0', false,
+ N_(" Put read-only non-executable sections in their own segment"),
+ NULL);
+
DEFINE_string(m, options::EXACTLY_ONE_DASH, 'm', "",
- N_("Ignored for compatibility"), N_("EMULATION"));
+ N_("Set GNU linker emulation; obsolete"), N_("EMULATION"));
DEFINE_bool(print_map, options::TWO_DASHES, 'M', false,
N_("Write map file on standard output"), NULL);
DEFINE_string(oformat, options::EXACTLY_TWO_DASHES, '\0', "elf",
N_("Set output format"), N_("[binary]"));
+ DEFINE_bool(p, options::ONE_DASH, '\0', false,
+ N_("(ARM only) Ignore for backward compatibility"), NULL);
+
+ DEFINE_bool(pie, options::ONE_DASH, '\0', false,
+ N_("Create a position independent executable"), NULL);
+ DEFINE_bool_alias(pic_executable, pie, options::TWO_DASHES, '\0',
+ N_("Create a position independent executable"), NULL,
+ false);
+
+ DEFINE_bool(pipeline_knowledge, options::ONE_DASH, '\0', false,
+ NULL, N_("(ARM only) Ignore for backward compatibility"));
+
#ifdef ENABLE_PLUGINS
DEFINE_special(plugin, options::TWO_DASHES, '\0',
N_("Load a plugin library"), N_("PLUGIN"));
DEFINE_bool(preread_archive_symbols, options::TWO_DASHES, '\0', false,
N_("Preread archive symbols when multi-threaded"), NULL);
+ DEFINE_bool(print_output_format, options::TWO_DASHES, '\0', false,
+ N_("Print default output format"), NULL);
+
DEFINE_string(print_symbol_counts, options::TWO_DASHES, '\0', NULL,
N_("Print symbols defined and used for each input"),
N_("FILENAME"));
DEFINE_bool(relocatable, options::EXACTLY_ONE_DASH, 'r', false,
N_("Generate relocatable output"), NULL);
+ DEFINE_bool_alias(i, relocatable, options::EXACTLY_ONE_DASH, '\0',
+ N_("Synonym for -r"), NULL, false);
DEFINE_bool(relax, options::TWO_DASHES, '\0', false,
N_("Relax branches on certain targets"), NULL);
+ DEFINE_string(retain_symbols_file, options::TWO_DASHES, '\0', NULL,
+ N_("keep only symbols listed in this file"), N_("FILE"));
+
// -R really means -rpath, but can mean --just-symbols for
// compatibility with GNU ld. -rpath is always -rpath, so we list
// it separately.
N_("Add DIR to link time shared library search path"),
N_("DIR"));
+ DEFINE_string(section_ordering_file, options::TWO_DASHES, '\0', NULL,
+ N_("Layout sections in the order specified."),
+ N_("FILENAME"));
+
+ DEFINE_special(section_start, options::TWO_DASHES, '\0',
+ N_("Set address of section"), N_("SECTION=ADDRESS"));
+
+ DEFINE_optional_string(sort_common, options::TWO_DASHES, '\0', NULL,
+ N_("Sort common symbols by alignment"),
+ N_("[={ascending,descending}]"));
+
+ DEFINE_uint(spare_dynamic_tags, options::TWO_DASHES, '\0', 5,
+ N_("Dynamic tag slots to reserve (default 5)"),
+ N_("COUNT"));
+
DEFINE_bool(strip_all, options::TWO_DASHES, 's', false,
N_("Strip all symbols"), NULL);
DEFINE_bool(strip_debug, options::TWO_DASHES, 'S', false,
DEFINE_bool(strip_lto_sections, options::TWO_DASHES, '\0', true,
N_("Strip LTO intermediate code sections"), NULL);
- DEFINE_bool(no_keep_memory, options::TWO_DASHES, 's', false,
- N_("Use less memory and more disk I/O (included only for compatibility with GNU ld)"), NULL);
+ DEFINE_int(stub_group_size, options::TWO_DASHES , '\0', 1,
+ N_("(ARM only) The maximum distance from instructions in a group "
+ "of sections to their stubs. Negative values mean stubs "
+ "are always after the group. 1 means using default size.\n"),
+ N_("SIZE"));
+
+ DEFINE_bool(no_keep_memory, options::TWO_DASHES, '\0', false,
+ N_("Use less memory and more disk I/O "
+ "(included only for compatibility with GNU ld)"), NULL);
- DEFINE_bool(shared, options::ONE_DASH, '\0', false,
+ DEFINE_bool(shared, options::ONE_DASH, 'G', false,
N_("Generate shared library"), NULL);
DEFINE_bool(Bshareable, options::ONE_DASH, '\0', false,
N_("Generate shared library"), NULL);
+ DEFINE_uint(split_stack_adjust_size, options::TWO_DASHES, '\0', 0x4000,
+ N_("Stack size when -fsplit-stack function calls non-split"),
+ N_("SIZE"));
+
// This is not actually special in any way, but I need to give it
// a non-standard accessor-function name because 'static' is a keyword.
DEFINE_special(static, options::ONE_DASH, '\0',
N_("Do not link against shared libraries"), NULL);
+ DEFINE_enum(icf, options::TWO_DASHES, '\0', "none",
+ N_("Identical Code Folding. "
+ "\'--icf=safe\' Folds ctors, dtors and functions whose"
+ " pointers are definitely not taken."),
+ ("[none,all,safe]"),
+ {"none", "all", "safe"});
+
+ DEFINE_uint(icf_iterations, options::TWO_DASHES , '\0', 0,
+ N_("Number of iterations of ICF (default 2)"), N_("COUNT"));
+
+ DEFINE_bool(print_icf_sections, options::TWO_DASHES, '\0', false,
+ N_("List folded identical sections on stderr"),
+ N_("Do not list folded identical sections"));
+
+ DEFINE_set(keep_unique, options::TWO_DASHES, '\0',
+ N_("Do not fold this symbol during ICF"), N_("SYMBOL"));
+
DEFINE_bool(gc_sections, options::TWO_DASHES, '\0', false,
N_("Remove unused sections"),
N_("Don't remove unused sections (default)"));
DEFINE_set(undefined, options::TWO_DASHES, 'u',
N_("Create undefined reference to SYMBOL"), N_("SYMBOL"));
+ DEFINE_enum(unresolved_symbols, options::TWO_DASHES, '\0', NULL,
+ N_("How to handle unresolved symbols"),
+ ("ignore-all,report-all,ignore-in-object-files,"
+ "ignore-in-shared-libs"),
+ {"ignore-all", "report-all", "ignore-in-object-files",
+ "ignore-in-shared-libs"});
+
DEFINE_bool(verbose, options::TWO_DASHES, '\0', false,
N_("Synonym for --debug=files"), NULL);
DEFINE_special(version_script, options::TWO_DASHES, '\0',
N_("Read version script"), N_("FILE"));
+ DEFINE_bool(warn_common, options::TWO_DASHES, '\0', false,
+ N_("Warn about duplicate common symbols"),
+ N_("Do not warn about duplicate common symbols (default)"));
+
+ DEFINE_bool(warn_constructors, options::TWO_DASHES, '\0', false,
+ N_("Ignored"), N_("Ignored"));
+
+ DEFINE_bool(warn_execstack, options::TWO_DASHES, '\0', false,
+ N_("Warn if the stack is executable"),
+ N_("Do not warn if the stack is executable (default)"));
+
+ DEFINE_bool(warn_mismatch, options::TWO_DASHES, '\0', true,
+ NULL, N_("Don't warn about mismatched input files"));
+
+ DEFINE_bool(warn_multiple_gp, options::TWO_DASHES, '\0', false,
+ N_("Ignored"), NULL);
+
DEFINE_bool(warn_search_mismatch, options::TWO_DASHES, '\0', true,
N_("Warn when skipping an incompatible library"),
N_("Don't warn when skipping an incompatible library"));
+ DEFINE_bool(warn_shared_textrel, options::TWO_DASHES, '\0', false,
+ N_("Warn if text segment is not shareable"),
+ N_("Do not warn if text segment is not shareable (default)"));
+
+ DEFINE_bool(warn_unresolved_symbols, options::TWO_DASHES, '\0', false,
+ N_("Report unresolved symbols as warnings"),
+ NULL);
+ DEFINE_bool_alias(error_unresolved_symbols, warn_unresolved_symbols,
+ options::TWO_DASHES, '\0',
+ N_("Report unresolved symbols as errors"),
+ NULL, true);
+
+ DEFINE_bool(wchar_size_warning, options::TWO_DASHES, '\0', true, NULL,
+ N_("(ARM only) Do not warn about objects with incompatible "
+ "wchar_t sizes"));
+
DEFINE_bool(whole_archive, options::TWO_DASHES, '\0', false,
N_("Include all archive contents"),
N_("Include only needed archive contents"));
DEFINE_set(trace_symbol, options::TWO_DASHES, 'y',
N_("Trace references to symbol"), N_("SYMBOL"));
+ DEFINE_bool(undefined_version, options::TWO_DASHES, '\0', true,
+ N_("Allow unused version in script (default)"),
+ N_("Do not allow unused version in script"));
+
DEFINE_string(Y, options::EXACTLY_ONE_DASH, 'Y', "",
N_("Default search path for Solaris compatibility"),
N_("PATH"));
DEFINE_special(end_group, options::TWO_DASHES, ')',
N_("End a library search group"), NULL);
+
+ DEFINE_special(start_lib, options::TWO_DASHES, '\0',
+ N_("Start a library"), NULL);
+ DEFINE_special(end_lib, options::TWO_DASHES, '\0',
+ N_("End a library "), NULL);
+
// The -z options.
DEFINE_bool(combreloc, options::DASH_Z, '\0', true,
NULL);
DEFINE_bool(execstack, options::DASH_Z, '\0', false,
N_("Mark output as requiring executable stack"), NULL);
- DEFINE_uint64(max_page_size, options::DASH_Z, '\0', 0,
- N_("Set maximum page size to SIZE"), N_("SIZE"));
- DEFINE_bool(noexecstack, options::DASH_Z, '\0', false,
- N_("Mark output as not requiring executable stack"), NULL);
DEFINE_bool(initfirst, options::DASH_Z, '\0', false,
N_("Mark DSO to be initialized first at runtime"),
NULL);
DEFINE_bool(interpose, options::DASH_Z, '\0', false,
N_("Mark object to interpose all DSOs but executable"),
NULL);
+ DEFINE_bool_alias(lazy, now, options::DASH_Z, '\0',
+ N_("Mark object for lazy runtime binding (default)"),
+ NULL, true);
DEFINE_bool(loadfltr, options::DASH_Z, '\0', false,
N_("Mark object requiring immediate process"),
NULL);
+ DEFINE_uint64(max_page_size, options::DASH_Z, '\0', 0,
+ N_("Set maximum page size to SIZE"), N_("SIZE"));
+ DEFINE_bool(muldefs, options::DASH_Z, '\0', false,
+ N_("Allow multiple definitions of symbols"),
+ NULL);
+ // copyreloc is here in the list because there is only -z
+ // nocopyreloc, not -z copyreloc.
+ DEFINE_bool(copyreloc, options::DASH_Z, '\0', true,
+ NULL,
+ N_("Do not create copy relocs"));
DEFINE_bool(nodefaultlib, options::DASH_Z, '\0', false,
N_("Mark object not to use default search paths"),
NULL);
DEFINE_bool(nodump, options::DASH_Z, '\0', false,
N_("Mark DSO not available to dldump"),
NULL);
- DEFINE_bool(relro, options::DASH_Z, '\0', false,
- N_("Where possible mark variables read-only after relocation"),
- N_("Don't mark variables read-only after relocation"));
+ DEFINE_bool(noexecstack, options::DASH_Z, '\0', false,
+ N_("Mark output as not requiring executable stack"), NULL);
+ DEFINE_bool(now, options::DASH_Z, '\0', false,
+ N_("Mark object for immediate function binding"),
+ NULL);
DEFINE_bool(origin, options::DASH_Z, '\0', false,
N_("Mark DSO to indicate that needs immediate $ORIGIN "
"processing at runtime"), NULL);
+ DEFINE_bool(relro, options::DASH_Z, '\0', false,
+ N_("Where possible mark variables read-only after relocation"),
+ N_("Don't mark variables read-only after relocation"));
+ DEFINE_bool(text, options::DASH_Z, '\0', false,
+ N_("Do not permit relocations in read-only segments"),
+ N_("Permit relocations in read-only segments (default)"));
+ DEFINE_bool_alias(textoff, text, options::DASH_Z, '\0',
+ N_("Permit relocations in read-only segments (default)"),
+ NULL, true);
public:
typedef options::Dir_list Dir_list;
// any problems.
void finalize();
+ // True if we printed the version information.
+ bool
+ printed_version() const
+ { return this->printed_version_; }
+
// The macro defines output() (based on --output), but that's a
// generic name. Provide this alternative name, which is clearer.
const char*
// the output is position-independent or not.
bool
output_is_position_independent() const
- { return this->shared(); }
+ { return this->shared() || this->pie(); }
// Return true if the output is something that can be exec()ed, such
// as a static executable, or a position-dependent or
// object file.
bool
output_is_executable() const
- { return !this->shared() || this->output_is_pie(); }
-
- // Return true if the output is a position-independent executable.
- // This is currently not supported.
- bool
- output_is_pie() const
- { return false; }
+ { return !this->shared() && !this->relocatable(); }
// This would normally be static(), and defined automatically, but
// since static is a keyword, we need to come up with our own name.
OBJECT_FORMAT_BINARY
};
+ // Convert a string to an Object_format. Gives an error if the
+ // string is not recognized.
+ static Object_format
+ string_to_object_format(const char* arg);
+
// Note: these functions are not very fast.
Object_format format_enum() const;
Object_format oformat_enum() const;
bool
is_in_system_directory(const std::string& name) const;
+ // RETURN whether SYMBOL_NAME should be kept, according to symbols_to_retain_.
+ bool
+ should_retain_symbol(const char* symbol_name) const
+ {
+ if (symbols_to_retain_.empty()) // means flag wasn't specified
+ return true;
+ return symbols_to_retain_.find(symbol_name) != symbols_to_retain_.end();
+ }
+
// These are the best way to get access to the execstack state,
// not execstack() and noexecstack() which are hard to use properly.
bool
is_stack_executable() const
{ return this->execstack_status_ == EXECSTACK_YES; }
+ bool
+ icf_enabled() const
+ { return this->icf_status_ != ICF_NONE; }
+
+ bool
+ icf_safe_folding() const
+ { return this->icf_status_ == ICF_SAFE; }
+
// The --demangle option takes an optional string, and there is also
// a --no-demangle option. This is the best way to decide whether
// to demangle or not.
in_dynamic_list(const char* symbol) const
{ return this->dynamic_list_.version_script_info()->symbol_is_local(symbol); }
+ // Finalize the dynamic list.
+ void
+ finalize_dynamic_list()
+ { this->dynamic_list_.version_script_info()->finalize(); }
+
+ // The mode selected by the --incremental options.
+ enum Incremental_mode
+ {
+ // No incremental linking (--no-incremental).
+ INCREMENTAL_OFF,
+ // Incremental update only (--incremental-update).
+ INCREMENTAL_UPDATE,
+ // Force a full link, but prepare for subsequent incremental link
+ // (--incremental-full).
+ INCREMENTAL_FULL,
+ // Incremental update if possible, fallback to full link (--incremental).
+ INCREMENTAL_AUTO
+ };
+
+ // The incremental linking mode.
+ Incremental_mode
+ incremental_mode() const
+ { return this->incremental_mode_; }
+
// The disposition given by the --incremental-changed,
// --incremental-unchanged or --incremental-unknown option. The
// value may change as we proceed parsing the command line flags.
incremental_disposition() const
{ return this->incremental_disposition_; }
+ // The disposition to use for startup files (those that precede the
+ // first --incremental-changed, etc. option).
+ Incremental_disposition
+ incremental_startup_disposition() const
+ { return this->incremental_startup_disposition_; }
+
// Return true if S is the name of a library excluded from automatic
// symbol export.
bool
- check_excluded_libs (const std::string &s) const;
+ check_excluded_libs(const std::string &s) const;
+
+ // If an explicit start address was given for section SECNAME with
+ // the --section-start option, return true and set *PADDR to the
+ // address. Otherwise return false.
+ bool
+ section_start(const char* secname, uint64_t* paddr) const;
+
+ // Return whether any --section-start option was used.
+ bool
+ any_section_start() const
+ { return !this->section_starts_.empty(); }
+
+ enum Fix_v4bx
+ {
+ // Leave original instruction.
+ FIX_V4BX_NONE,
+ // Replace instruction.
+ FIX_V4BX_REPLACE,
+ // Generate an interworking veneer.
+ FIX_V4BX_INTERWORKING
+ };
+
+ Fix_v4bx
+ fix_v4bx() const
+ { return (this->fix_v4bx_); }
+
+ enum Endianness
+ {
+ ENDIANNESS_NOT_SET,
+ ENDIANNESS_BIG,
+ ENDIANNESS_LITTLE
+ };
+
+ Endianness
+ endianness() const
+ { return this->endianness_; }
private:
// Don't copy this structure.
EXECSTACK_NO
};
+ enum Icf_status
+ {
+ // Do not fold any functions (Default or --icf=none).
+ ICF_NONE,
+ // All functions are candidates for folding. (--icf=all).
+ ICF_ALL,
+ // Only ctors and dtors are candidates for folding. (--icf=safe).
+ ICF_SAFE
+ };
+
+ void
+ set_icf_status(Icf_status value)
+ { this->icf_status_ = value; }
+
void
set_execstack_status(Execstack value)
{ this->execstack_status_ = value; }
// These are called by finalize() to set up the search-path correctly.
void
- add_to_library_path_with_sysroot(const char* arg)
+ add_to_library_path_with_sysroot(const std::string& arg)
{ this->add_search_directory_to_library_path(Search_directory(arg, true)); }
// Apply any sysroot to the directory lists.
// Add a plugin and its arguments to the list of plugins.
void
- add_plugin(const char *filename);
+ add_plugin(const char* filename);
// Add a plugin option.
void
add_plugin_option(const char* opt);
+ // Whether we printed version information.
+ bool printed_version_;
// Whether to mark the stack as executable.
Execstack execstack_status_;
+ // Whether to do code folding.
+ Icf_status icf_status_;
// Whether to do a static link.
bool static_;
// Whether to do demangling.
// script.cc, we store this as a Script_options object, even though
// we only use a single Version_tree from it.
Script_options dynamic_list_;
+ // The incremental linking mode.
+ Incremental_mode incremental_mode_;
// The disposition given by the --incremental-changed,
// --incremental-unchanged or --incremental-unknown option. The
// value may change as we proceed parsing the command line flags.
Incremental_disposition incremental_disposition_;
- // Wheater we have seen one of the options that require incremental
- // build (--incremental-changed, --incremental-unchanged or
- // --incremental-unknown)
+ // The disposition to use for startup files (those marked
+ // INCREMENTAL_STARTUP).
+ Incremental_disposition incremental_startup_disposition_;
+ // Whether we have seen one of the options that require incremental
+ // build (--incremental-changed, --incremental-unchanged,
+ // --incremental-unknown, or --incremental-startup-unchanged).
bool implicit_incremental_;
- // Libraries excluded from automatic export via --exclude-libs
+ // Libraries excluded from automatic export, via --exclude-libs.
Unordered_set<std::string> excluded_libs_;
+ // List of symbol-names to keep, via -retain-symbol-info.
+ Unordered_set<std::string> symbols_to_retain_;
+ // Map from section name to address from --section-start.
+ std::map<std::string, uint64_t> section_starts_;
+ // Whether to process armv4 bx instruction relocation.
+ Fix_v4bx fix_v4bx_;
+ // Endianness.
+ Endianness endianness_;
};
// The position-dependent options. We use this to store the state of
class Input_file_argument
{
public:
+ enum Input_file_type
+ {
+ // A regular file, name used as-is, not searched.
+ INPUT_FILE_TYPE_FILE,
+ // A library name. When used, "lib" will be prepended and ".so" or
+ // ".a" appended to make a filename, and that filename will be searched
+ // for using the -L paths.
+ INPUT_FILE_TYPE_LIBRARY,
+ // A regular file, name used as-is, but searched using the -L paths.
+ INPUT_FILE_TYPE_SEARCHED_FILE
+ };
+
// name: file name or library name
- // is_lib: true if name is a library name: that is, emits the leading
- // "lib" and trailing ".so"/".a" from the name
+ // type: the type of this input file.
// extra_search_path: an extra directory to look for the file, prior
// to checking the normal library search path. If this is "",
// then no extra directory is added.
// options: The position dependent options at this point in the
// command line, such as --whole-archive.
Input_file_argument()
- : name_(), is_lib_(false), extra_search_path_(""), just_symbols_(false),
- options_()
+ : name_(), type_(INPUT_FILE_TYPE_FILE), extra_search_path_(""),
+ just_symbols_(false), options_(), arg_serial_(0)
{ }
- Input_file_argument(const char* name, bool is_lib,
+ Input_file_argument(const char* name, Input_file_type type,
const char* extra_search_path,
bool just_symbols,
const Position_dependent_options& options)
- : name_(name), is_lib_(is_lib), extra_search_path_(extra_search_path),
- just_symbols_(just_symbols), options_(options)
+ : name_(name), type_(type), extra_search_path_(extra_search_path),
+ just_symbols_(just_symbols), options_(options), arg_serial_(0)
{ }
// You can also pass in a General_options instance instead of a
// Position_dependent_options. In that case, we extract the
// position-independent vars from the General_options and only store
// those.
- Input_file_argument(const char* name, bool is_lib,
+ Input_file_argument(const char* name, Input_file_type type,
const char* extra_search_path,
bool just_symbols,
const General_options& options)
- : name_(name), is_lib_(is_lib), extra_search_path_(extra_search_path),
- just_symbols_(just_symbols), options_(options)
+ : name_(name), type_(type), extra_search_path_(extra_search_path),
+ just_symbols_(just_symbols), options_(options), arg_serial_(0)
{ }
const char*
bool
is_lib() const
- { return this->is_lib_; }
+ { return type_ == INPUT_FILE_TYPE_LIBRARY; }
+
+ bool
+ is_searched_file() const
+ { return type_ == INPUT_FILE_TYPE_SEARCHED_FILE; }
const char*
extra_search_path() const
// options.
bool
may_need_search() const
- { return this->is_lib_ || !this->extra_search_path_.empty(); }
+ {
+ return (this->is_lib()
+ || this->is_searched_file()
+ || !this->extra_search_path_.empty());
+ }
+
+ // Set the serial number for this argument.
+ void
+ set_arg_serial(unsigned int arg_serial)
+ { this->arg_serial_ = arg_serial; }
+
+ // Get the serial number.
+ unsigned int
+ arg_serial() const
+ { return this->arg_serial_; }
private:
// We use std::string, not const char*, here for convenience when
// using script files, so that we do not have to preserve the string
// in that case.
std::string name_;
- bool is_lib_;
+ Input_file_type type_;
std::string extra_search_path_;
bool just_symbols_;
Position_dependent_options options_;
+ // A unique index for this file argument in the argument list.
+ unsigned int arg_serial_;
};
// A file or library, or a group, from the command line.
public:
// Create a file or library argument.
explicit Input_argument(Input_file_argument file)
- : is_file_(true), file_(file), group_(NULL)
+ : is_file_(true), file_(file), group_(NULL), lib_(NULL), script_info_(NULL)
{ }
// Create a group argument.
explicit Input_argument(Input_file_group* group)
- : is_file_(false), group_(group)
+ : is_file_(false), group_(group), lib_(NULL), script_info_(NULL)
+ { }
+
+ // Create a lib argument.
+ explicit Input_argument(Input_file_lib* lib)
+ : is_file_(false), group_(NULL), lib_(lib), script_info_(NULL)
{ }
// Return whether this is a file.
// Return whether this is a group.
bool
is_group() const
- { return !this->is_file_; }
+ { return !this->is_file_ && this->lib_ == NULL; }
+
+ // Return whether this is a lib.
+ bool
+ is_lib() const
+ { return this->lib_ != NULL; }
// Return the information about the file.
const Input_file_argument&
return this->group_;
}
+ // Return the information about the lib.
+ const Input_file_lib*
+ lib() const
+ {
+ gold_assert(!this->is_file_);
+ gold_assert(this->lib_);
+ return this->lib_;
+ }
+
+ Input_file_lib*
+ lib()
+ {
+ gold_assert(!this->is_file_);
+ gold_assert(this->lib_);
+ return this->lib_;
+ }
+
+ // If a script generated this argument, store a pointer to the script info.
+ // Currently used only for recording incremental link information.
+ void
+ set_script_info(Script_info* info)
+ { this->script_info_ = info; }
+
+ Script_info*
+ script_info() const
+ { return this->script_info_; }
+
private:
bool is_file_;
Input_file_argument file_;
Input_file_group* group_;
+ Input_file_lib* lib_;
+ Script_info* script_info_;
};
typedef std::vector<Input_argument> Input_argument_list;
{ }
// Add a file to the end of the group.
- void
+ Input_argument&
add_file(const Input_file_argument& arg)
- { this->files_.push_back(Input_argument(arg)); }
+ {
+ this->files_.push_back(Input_argument(arg));
+ return this->files_.back();
+ }
// Iterators to iterate over the group contents.
Input_argument_list files_;
};
+// A lib from the command line. This is a set of arguments within
+// --start-lib ... --end-lib.
+
+class Input_file_lib
+{
+ public:
+ typedef Input_argument_list::const_iterator const_iterator;
+
+ Input_file_lib(const Position_dependent_options& options)
+ : files_(), options_(options)
+ { }
+
+ // Add a file to the end of the lib.
+ Input_argument&
+ add_file(const Input_file_argument& arg)
+ {
+ this->files_.push_back(Input_argument(arg));
+ return this->files_.back();
+ }
+
+ const Position_dependent_options&
+ options() const
+ { return this->options_; }
+
+ // Iterators to iterate over the lib contents.
+
+ const_iterator
+ begin() const
+ { return this->files_.begin(); }
+
+ const_iterator
+ end() const
+ { return this->files_.end(); }
+
+ size_t
+ size() const
+ { return this->files_.size(); }
+
+ private:
+ Input_argument_list files_;
+ Position_dependent_options options_;
+};
+
// A list of files from the command line or a script.
class Input_arguments
typedef Input_argument_list::const_iterator const_iterator;
Input_arguments()
- : input_argument_list_(), in_group_(false)
+ : input_argument_list_(), in_group_(false), in_lib_(false), file_count_(0)
{ }
// Add a file.
- void
- add_file(const Input_file_argument& arg);
+ Input_argument&
+ add_file(Input_file_argument& arg);
// Start a group (the --start-group option).
void
void
end_group();
+ // Start a lib (the --start-lib option).
+ void
+ start_lib(const Position_dependent_options&);
+
+ // End a lib (the --end-lib option).
+ void
+ end_lib();
+
// Return whether we are currently in a group.
bool
in_group() const
{ return this->in_group_; }
+ // Return whether we are currently in a lib.
+ bool
+ in_lib() const
+ { return this->in_lib_; }
+
// The number of entries in the list.
int
size() const
empty() const
{ return this->input_argument_list_.empty(); }
+ // Return the number of input files. This may be larger than
+ // input_argument_list_.size(), because of files that are part
+ // of groups or libs.
+ int
+ number_of_input_files() const
+ { return this->file_count_; }
+
private:
Input_argument_list input_argument_list_;
bool in_group_;
+ bool in_lib_;
+ unsigned int file_count_;
};
script_options()
{ return this->script_options_; }
- // Get the version-script options: a convenience routine.
+ // Finalize the version-script options and return them.
const Version_script_info&
- version_script() const
- { return *this->script_options_.version_script_info(); }
+ version_script();
// Get the input files.
Input_arguments&
// The number of input files.
int
number_of_input_files() const
- { return this->inputs_.size(); }
+ { return this->inputs_.number_of_input_files(); }
// Iterators to iterate over the list of input files.
Command_line(const Command_line&);
Command_line& operator=(const Command_line&);
+ // This is a dummy class to provide a constructor that runs before
+ // the constructor for the General_options. The Pre_options constructor
+ // is used as a hook to set the flag enabling the options to register
+ // themselves.
+ struct Pre_options {
+ Pre_options();
+ };
+
+ // This must come before options_!
+ Pre_options pre_options_;
General_options options_;
Position_dependent_options position_options_;
Script_options script_options_;
projects / binutils.git / blobdiff